fix steam token getting reset

.forgejo/workflows/derive.yml

@@ -20,8 +20,9 @@ jobs:
     runs-on: s2-runner
     env:
       GAME: ${{ github.event.inputs.game }}
-      STEAM_APPS: /home/cs2/.steam/SteamApps
       STEAM_USER: source2rosetta
+      STEAM_HOME_ANON: /home/cs2
+      STEAM_HOME_AUTH: /home/cs2/steam-auth
       RELEASE_BASE: ${{ github.server_url }}/${{ github.repository }}/releases/download
       OVERRIDE_DIR: /home/cs2/rosetta-override
     steps:
@@ -30,12 +31,14 @@ jobs:
       - name: Update the install to the current build
         run: |
           case "$GAME" in
-            cs2)   APPID=730 ;;
-            dota2) APPID=570 ;;
+            cs2)   APPID=730; LOGIN=anonymous;      STEAM_HOME="$STEAM_HOME_ANON" ;;
+            dota2) APPID=570; LOGIN="$STEAM_USER";  STEAM_HOME="$STEAM_HOME_AUTH" ;;
             *) echo "unknown game '$GAME' (expected cs2 or dota2)"; exit 1 ;;
           esac
-          echo "APPID=$APPID" >> "$GITHUB_ENV"
-          steamcmd +login "$STEAM_USER" +app_update "$APPID" +quit
+          STEAM_APPS="$STEAM_HOME/.steam/SteamApps"
+          { echo "APPID=$APPID"; echo "STEAM_APPS=$STEAM_APPS"; } >> "$GITHUB_ENV"
+
+          env HOME="$STEAM_HOME" steamcmd +login "$LOGIN" +app_update "$APPID" +quit
 
       - name: Resolve the game paths + the new buildid
         run: |